KR940010558A - Automatic Signal Tracking System and Control Method of Satellite Broadcast Receiver - Google Patents

Automatic Signal Tracking System and Control Method of Satellite Broadcast Receiver Download PDF

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Publication number
KR940010558A
KR940010558A KR1019920018675A KR920018675A KR940010558A KR 940010558 A KR940010558 A KR 940010558A KR 1019920018675 A KR1019920018675 A KR 1019920018675A KR 920018675 A KR920018675 A KR 920018675A KR 940010558 A KR940010558 A KR 940010558A
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South Korea
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signal
voice
channel
satellite
tuner
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KR1019920018675A
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Korean (ko)
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KR950010247B1 (en
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유덕배
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정장호
금성정보통신 주식회사
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Priority to KR1019920018675A priority Critical patent/KR950010247B1/en
Publication of KR940010558A publication Critical patent/KR940010558A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/90—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for satellite broadcast receiving

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  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

본 발명은 자동으로 신호를 추적하여 최적의 신호 수신 상태로 선국하는데 적당하도록 한 위성수신기의 자동신호 추적 시스템 및 그 제어방법에 관한 것으로서, 현재 수신되고 있는 채널의 각종 정보가 AFT 이득레벨, 동기신호 유무에서 나오며 이 정보를 마이크를 콘트롤 유니트가 인지하여 제3도와 같은 흐름으로 파라볼라 안테나의 위치, 극성조절기의 변위, 비데오 채널 주파수를 현재의 값에서 차례로 적당량 증감하는 순서를 거치면서 최고의 이득 레벨과 안정된 동기신호의 추출, AFT의 결과를 점검하여 놓고 다음 제1 및 제2복조부의 전계강도 출력을 역시 A/D 변환하여, 음성채널 선국 전계 위상동기루프회로에 5.0MHZ에서 9.0MHZ까지 10KHZ 간격으로 증가시키면서 전계의 출력이 최대인 점을 도출하며, 만일 스테레오인 경우는 레프트 채널의 위상동기 루프값에 180KHZ을 더한 범위에서 똑같은 동작을 한번더 반복하여 최적의 값을 구한다. 다음 앞서 찾아놓은 최적의 비데오 선국주파수, 극성조절기 조정값, 안테나추적이 변위값과 음성 선국주파수를 메모리의 같은 채널에 새로 저장함으로써 사용자는 단지 채널만 한번 선국하면 자동으로 최적의 신호수신 상태로 됨에따라 위성방송 수신기의 신뢰성을 향상 시킬 수 있는 것이다.The present invention relates to an automatic signal tracking system of a satellite receiver and a control method thereof, which are suitable for automatically tracking a signal and tuning to an optimal signal reception state, wherein various information of a channel currently being received includes an AFT gain level and a synchronization signal. This information is recognized by the control unit, and the control unit recognizes the microphone as shown in Figure 3. After extracting the synchronization signal and checking the result of the AFT, the A / D conversion of the field strength output of the first and second demodulators is also performed, and the voice channel tuning field phase synchronization loop circuit is increased by 10 KHZ intervals from 5.0 MHZ to 9.0 MHZ. While the output of the electric field is maximum, and if it is stereo, it is the phase synchronization of the left channel. The same behavior in the plus range 180KHZ to peugap repeated once more to obtain an optimum value. Next, the optimal video tuning frequency, polarity controller adjustment value, antenna tracking displacement value and voice tuning frequency are newly stored in the same channel of the memory so that the user automatically tunes to the optimal signal when the channel is tuned once. Therefore, the reliability of the satellite broadcasting receiver can be improved.

Description

위성 방송 수신기의 자동 신호 추적 시스템 및 제어방법Automatic Signal Tracking System and Control Method of Satellite Broadcast Receiver

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

재2도는 본 발명에 따른 위성방송 수신기의 자동신호 추적 시스템,2 is an automatic signal tracking system of a satellite broadcasting receiver according to the present invention,

제3도는 본 발명에 따른 위성수신기의 제어 흐름도.3 is a control flowchart of a satellite receiver according to the present invention.

Claims (2)

영상신호를 발생하는 튜너와 음성 신호를 복조하는 제1 및 제2 음성복조부를 갖는 위성방송 수신기 시스템에 있어서, 상기 튜너의 출력단에 연결되어 AFT 상태를 비교하는 비교기와, 상기 튜너의 출력측에 연결되어 자동이득 상태를 디지탈 값으로 변환하는 제1 A/D 변환기와, 상기 튜너의 출력측에 연결되어 동기 신호 유무를 판단하는 동기신호 검출회로와, 상기 제1 및 제2음성 복조부에 연결되어 각 음성에 해당되는 아날로그 신호를 디지탈 신호로 변환하는 제2및 제3A/D변환기와, 상기 각 비교기, 제1내지 제3A/D변화기, 동기신호 검출회로의 출력데이타에 의해 세팅된 조건으로 각각의 상태를 자동조절 시키는 마이크로 콘트롤 유니트가 포함되어 위성방송 수신을 자동으로 추적할 수 있도록 하는 위성 수신기의 자동신호 추적 시스템.A satellite broadcasting receiver system having a tuner for generating a video signal and first and second voice demodulators for demodulating an audio signal, comprising: a comparator coupled to an output of the tuner and comparing an AFT state, and coupled to an output side of the tuner; A first A / D converter for converting an auto gain state to a digital value, a synchronous signal detection circuit connected to an output side of the tuner to determine whether there is a synchronous signal, and connected to the first and second voice demodulators for each voice The second and third A / D converters for converting the analog signals corresponding to the digital signals into the digital signals, the respective comparators, the first to third A / D converters, and the conditions set by the output data of the synchronization signal detecting circuit. An automatic signal tracking system for satellite receivers that includes a micro control unit that automatically adjusts the number of satellites. 위성수신기의 제어방법에 있어서, 튜너를 통한 위성신호가 AFT, 동기신호, 자동이득이 최적 상태를 판단하여 영상 주파수 및 스큐 안테나 트래킹을 증감시키는 상태판단루틴(L1)과, 상기 상태판단루틴(L1)실행후 모든 정상적인 상태일 때 레프트 음성 채널의 전계 강도의 상태를 체크하여 음성 주파수를 증감하는 제1 음성처리 루틴(L2)과, 상기 제1음성처리루틴(L2) 실행 후 레프트 채널의 전계강도가 최상일 때 스테레오일 경우 다시 라이트 채널의 전계강도를 측정하여 최상이 아닐경우 오디오 주파수를 증감하고 전계강도가 적정할 때 세이브(SAVE)시키는 제2음성 처리루틴(L3)으로 이루어진 위성방송 수신기의 자동 신호 추적 시스템의 제어방법.In the control method of the satellite receiver, the state determination routine (L1) and the state determination routine (L1) to increase or decrease the image frequency and skew antenna tracking by determining the optimum state of the AFT, synchronization signal, automatic gain of the satellite signal through the tuner The first voice processing routine (L2) for increasing or decreasing the voice frequency by checking the state of the electric field strength of the left voice channel in all normal states after execution, and the electric field strength of the left channel after executing the first voice processing routine (L2). If the stereo is the best, the satellite channel receiver automatically consists of a second audio processing routine (L3) that measures the electric field strength of the light channel and increases or decreases the audio frequency if it is not the best and saves it when the electric field strength is appropriate. Control method of signal tracking system. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920018675A 1992-10-10 1992-10-10 The automatic signal tracking system of satelite receiver KR950010247B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920018675A KR950010247B1 (en) 1992-10-10 1992-10-10 The automatic signal tracking system of satelite receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920018675A KR950010247B1 (en) 1992-10-10 1992-10-10 The automatic signal tracking system of satelite receiver

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KR940010558A true KR940010558A (en) 1994-05-26
KR950010247B1 KR950010247B1 (en) 1995-09-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100321590B1 (en) * 1999-08-20 2002-02-01 오정훈 A method for controlling an antenna of a digital satellite broadcast receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100321590B1 (en) * 1999-08-20 2002-02-01 오정훈 A method for controlling an antenna of a digital satellite broadcast receiver

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KR950010247B1 (en) 1995-09-12

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